So everything happened so quickly that we didn't get a reaction from Matt on Stick's death. And that relationship is so complicated... So how does Matt mourn that? This could be a scene with his "mother" where being reunited with her makes him consider Stick and break down and realize that he effectively did just lose another parent. Or maybe after somehow his "death" is resolved, it is a conversation he finally has with Foggy or Karen about him, or one of the other Defenders helping him to grieve having realized how important Stick was to Matt's life (maybe Jessica since she is so perceptive and insightful on that stuff). Just Matt grieving and reflecting on both how much Stick fucked his life up but also the things Stick gave him...